$(function () {
    var data = [];
    var series = Math.floor(Math.random() * 10) + 1;
    var series = 4;
    for (var i = 0; i < series; i++) {
        data[i] = {label: "Series" + (i + 1), data: Math.floor(Math.random() * 100) + 1}
    }

    $.plot($("#pie-chart"), data,
        {
            colors: ["#F90", "#3C4049", "#666", "#BBB"],
            series: {
                pie: {
                    show: true,
                    label: {
                        show: false,
                        formatter: function (label, series) {
                            return '<div style="font-size:11px;text-align:center;padding:4px;color:white;">' + label + '<br/>' + Math.round(series.percent) + '%</div>';
                        },
                        threshold: 0.1
                    }
                }
            },
            legend: {
                show: true,
                noColumns: 1, // number of colums in legend table
                labelFormatter: null, // fn: string -> string
                labelBoxBorderColor: "#888", // border color for the little label boxes
                container: null, // container (as jQuery object) to put legend in, null means default on top of graph
                position: "ne", // position of default legend container within plot
                margin: [5, 10], // distance from grid edge to default legend container within plot
                backgroundOpacity: 0 // set to 0 to avoid background
            },
            grid: {
                hoverable: false,
                clickable: false
            },
        });

});